Preheat oven to 350F. Whisk together flour, sugar, brown sugar, baking soda, salt and spices in a large bowl.
Make a well in the center of the flour mixture and stir in vanilla, egg and melted butter until smooth. Stir in oats and raisins until they are evenly distributed.
Use large scoop and put one scoop into each well of the brownie pan. Push down with your fingers to flatten.
Bake for 10-12 minutes, let cool a few minutes before turning pan over onto cooling rack. Makes about 21 squares.